bot: Reword the message and colorize depending on the build status
bot: Reword the message and colorize depending on the build status

Should make visually scanning for build status a tad easier.

Signed-off-by: Emmanuele Bassi <049ee2061f71220e5aaf33f5be422fc2a2b06a44@gnome.org>
Signed-off-by: Colin Walters <694ce38231ed622bd1593ce4ec9aa85c9ddb0a78@verbum.org>

GNOME/gnome-ostree,GNOME/gnome-ostree,GNOME/gnome-ostree,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,vrutkovs/vrutkovs.github.io,djdeath/gnome-ostree,vrutkovs/vrutkovs.github.io,djdeath/gnome-ostree,djdeath/gnome-ostree,chergert/gnome-continuous,chergert/gnome-continuous